KR200273514Y1 - Convert valve passage - Google Patents

Abstract

The present invention relates to a flow path switching valve which is installed on a hot water pipe such as a boiler to change the flow direction of heating or hot water supply, and more specifically, the switching bushing coupled with the motor shaft of the driving motor is interlocked and interlocked to be in close contact with each other. New structure and operation configured to divert fluid flow through a single discharge port by selectively discharging fluid flowing through a plurality of inlet ports formed in the lower housing by selectively communicating the discharge guide hole and the inlet guide hole of the fixed bushing It relates to a flow path switching valve by the method.

Description

Flow switch valve {CONVERT VALVE PASSAGE}

The present invention relates to a flow path switching valve which is installed on a hot water pipe such as a boiler to change the flow direction of heating or hot water supply, and more specifically, the switching bushing coupled with the motor shaft of the driving motor is interlocked and interlocked to be in close contact with each other. New structure and operation configured to divert fluid flow through a single discharge port by selectively discharging fluid flowing through a plurality of inlet ports formed in the lower housing by selectively communicating the discharge guide hole and the inlet guide hole of the fixed bushing It relates to a flow path switching valve by the method.

In general, a motor-driven flow path switching valve of a conventionally known method is an eccentric shaft that is interlocked with the motor shaft 11a when the motor shaft 11a of the motor 11 is rotated according to a switch signal as shown in FIG. 1. 12 switching ball 13 is rotated about the motor shaft (11a) of the motor 11 while selectively closing the discharge port 14, 15 of the valve body 16 inflow of the valve body 16 It is configured to control the flow direction of the hot water or hot water supply flows through the port 17 and discharged to the discharge port (14, 15).

However, such a conventional flow path switching valve 10 is rotated while drawing a circular arc of the switching ball 13 of the eccentric shaft 12 which is interlocked with the motor shaft 11a of the motor 11 discharge port 14 ( 15 to seal the inlet, the adhesion of the switching ball 13 holding the discharge port 14, 15 is concentrated on the eccentric shaft 12, the torsion and bending stress is generated, the eccentric shaft 12 is twisted At the same time, it is bent at the same time, thereby reducing the sealing force that seals the inlet of the discharge port (14, 15), and eventually leaks to the discharge port (14) (15) was blocked by the switching ball 13 after a long time There was a problem.

In addition, a rubber leakage preventing ring 18 fitted to the eccentric shaft 12 to prevent the fluid from leaking from the valve body 16 to the motor housing 19, the eccentric shaft for rotating the switch ball 13 The frictional heat causes the leakage preventing ring 18 and the eccentric shaft 12 to be worn by the frictional heat, and the fluid leaks into the motor housing 19 through the worn gap, which eventually causes the switch to leak due to the leaked fluid. As the mechanism and the motor 11 malfunctioned, there was a problem that the function as the flow path switching valve 10 is lost.

The present invention has been proposed in view of the problems described above, and its purpose is to selectively rotate the discharge guide hole and the inlet guide hole of the fixing fixing bushing while rotating the switching bushing coupled to the motor shaft of the driving motor in a straight line. It is to provide a flow path switching valve according to a new structure and operation method configured to be in communication by the fluid flow to the plurality of inlet ports formed in the lower housing selectively discharged through a single discharge port to switch the flow of fluid.

According to a feature of the present invention for achieving the above object, the upper side of the installation groove is formed in a circular shape, the bottom surface of the installation groove is formed in the vertical through the discharge port to communicate with the outside, A lower housing formed at a radially peripheral portion of the bottom surface of the installation recess with a plurality of inflow ports orthogonal in a horizontal direction and spaced apart from each other to communicate with the outside; An upper housing which is fixedly coupled to the upper surface of the lower housing by a coupling means, and formed inside the upper housing so as to be stepped between the rotary sealing hole and the lower opening of the switching chamber; A driving motor fixedly coupled to an upper surface of the upper housing, the motor shaft rotating in response to an electrical signal; A close fixing unit coupled to the switching chamber of the upper housing and having a discharge guide hole and an inlet guide hole communicating with the inlet and outlet ports of the lower housing; It is rotatably coupled to the switching chamber of the upper housing to be in close contact with the upper surface of the close fixing fixture, the bottom surface is formed with a communication hole for selectively communicating with the discharge port and the inlet port of the close fixing fastening, the upper surface is coupled A ball bushing conversion bushing; It is rotatably coupled to the rotary sealing hole of the upper housing, the bottom is formed with a coupling protrusion is inserted into the coupling hole of the switching bushing, the upper surface is formed with a coupling groove to which the motor shaft 131 of the motor is coupled, An inner bushing having a ring groove formed at a periphery thereof with a sealing ring inserted therein; A flow path switching valve is provided, which is made of a silicon O-ring which is elastically embedded between the installation recess of the lower housing and the bottom of the close fixing portion to prevent leakage.

1 is a block diagram showing a conventional flow path switching valve.

Figure 2 is an exploded perspective view showing a flow path switching valve according to an embodiment of the present invention.

3 is an exploded cross-sectional view showing a flow path switching valve of the present invention.

Figure 4 is a cross-sectional view showing the assembled state of the flow path switching valve of the present invention.

5A, 5B and 5C are plan views showing the operation relationship between the close fixing unit and the switching bushing which are the main parts of the flow path switching valve of the present invention;

<Explanation of symbols for the main parts of the drawings>

100: flow path switching valve 110: lower housing

111: installation groove 112: discharge port

112a: coupling thread portion 113: inlet port

113a: coupling thread portion 114: inlet port

114a: coupling thread portion 115: inlet port

115: coupling screw portion 116: fitting hole

120: upper housing 121: coupling means

121a: engagement hole 121b: boss

121c: bolt 122: rotation sealing hole

123: switching room 123a: stopper protrusion

125: gasket 126: screw hole

130: drive motor 131: motor shaft

132: screw 140: close fixing

141: stopper hole 142: discharge guide hole

143: inflow guide hole 144: inflow guide hole

145: inflow guide hole 146: fitting hole

150: switch bushing 151: communication hole

152: coupling hole 160: inner bushing

161: coupling protrusion 162: coupling groove

163: sealing ring 164: ring groove

170: silicon O-ring 180: reducer

181: input unit 182: output unit

190: sealing bracket 191: screw

192: fitting hole 193: sealing ring

194 ring hole 195 tool hole

Hereinafter, the present invention will be described in detail with reference to the accompanying flow valve valve as follows.

Figure 2 is an exploded perspective view showing a flow path switching valve according to an embodiment of the present invention, Figure 3 is an exploded cross-sectional view showing a flow path switching valve of the present invention, Figure 4 is a cross-sectional view showing an assembled state of the flow path switching valve of the present invention. to be.

As shown, the flow path switching valve 100 according to the embodiment of the present invention is formed in the upper opening groove 111 is formed in a circular shape, the discharge port 112 in the center of the bottom surface of the installation groove 111 ) Is vertically penetrated so as to communicate with the outside, and a plurality of inflow ports 113, 114, 115 are orthogonal in the horizontal direction at the peripheral edge of the bottom of the installation recess 111, with a predetermined interval so as to communicate with the outside. A lower housing 110 formed radially; The upper housing 120 is fixedly coupled to the upper surface and the coupling means 121 of the lower housing 110, and the upper housing 120 is formed in the vertical housing so that the rotary sealing hole 122 and the lower opening switching chamber 123 is stepped therein. and; A driving motor 130 fixedly coupled to an upper surface of the upper housing 120 and having a motor shaft 131 rotated according to an electrical signal; It is fixedly coupled to the switching chamber 123 of the upper housing 120, and communicates with the inlet port 113, 114, 115 and the discharge port 112 of the lower housing 110 therein. A close fixing portion 140 in which discharge guide holes 142 and inlet guide holes 143, 144 and 145 are formed; It is rotatably coupled to the switching chamber 123 of the upper housing 120 to be in close contact with the upper surface of the close fixing portion 140, the discharge port 112 and one inlet port of the close fixing portion 140 on the bottom A communication hole 151 through which the 113, 114, and 115 are selectively communicated with each other, and a switching bushing 150 having a coupling hole 152 formed thereon; It is rotatably coupled to the rotary sealing hole 122 of the upper housing 120, the bottom is formed with a coupling protrusion 161 inserted into the coupling hole 152 of the conversion bushing 150, the upper surface of the drive motor An inner bushing 160 having a coupling groove 162 to which the motor shaft 131 of the 130 is coupled, and a ring groove 164 into which the sealing ring 163 is inserted; Silicon O-ring 170 is elastically embedded between the installation groove 111 of the lower housing 110 and the bottom of the close fixing portion 140 to prevent leakage; The input unit 181 is coupled between the upper housing 120 and the drive motor 130 to reduce the driving force of the drive motor 130, the upper surface is coupled to interlock with the motor shaft 131 of the drive motor 130. A reduction gear (180) having a bottom portion and an output portion (182) coupled to interlock the inner bushing (160); A sealing bracket fixed to the upper surface of the upper housing 120 while sealing the inner bushing 160 to prevent leakage between the rotary sealing hole 122 of the upper housing 120 and the coupling surface of the inner bushing 160. 190 is included.

The coupling means 121 is integrally formed with the boss portion 121b having coupling holes 121a at the upper periphery of the lower housing 110 and the lower outer periphery of the upper housing 120, respectively, and the coupling hole 121a. The bolt 121c is fastened to the lower housing 110 and the upper housing 120 to be integrally coupled or separated.

Coupling screws 113a, 114a, 115a, 112 that allow pipe pipes to be coupled to the outer surfaces of the lower housing 110 that coincide with the inlet ports 113, 114, 115 and the discharge port 112.

a) is formed, and a gasket 125 for blocking the leakage of fluid is inherently coupled between the upper housing 120 and the lower housing 110.

The bottom discharge guide hole 142 and the inflow guide hole 143, 144, 14 of the close fixing fixing 140

5) and fitting holes 146 and 116 into which the ends of the silicon O-rings 170 are inserted, respectively, at the inlet of the discharge port 112 and the inlet port 113, 114 and 115 of the lower housing 110, respectively. Is formed is configured so that the silicon O-ring 170 is more stably embedded.

A threaded portion 191 is formed on an outer circumference of the sealed bracket 190, and a screw hole 126 to which the screwed portion 191 of the sealed bracket 190 is fastened to an upper surface of the upper housing 120 is rotated and closed. Is formed in communication with the 122, the central portion is formed with a fitting hole 192 to be rotatably fitted to the output unit 182 of the reducer 180 or the motor shaft 131 of the drive motor 130, A ring hole 194 is formed at the bottom of the sealing bracket 190 so that the sealing ring 193 is fitted to prevent leakage of the fluid, and a tool hole 195 is formed at the periphery of the upper surface to insert a tightening tool.

A plurality of stopper holes 141 are formed on an outer circumference of the close fixing portion 140, and a stopper hole 141 of the close fixing portions 140 is formed on an inner circumference of the switching chamber 123 of the upper housing 120. The stopper protrusion 123a to be inserted is formed so that the close fixing portion 140 can be lifted up and down in the switching chamber 123 of the upper housing 120 so as to prevent rotating even when possible.

The upper housing 120, the reducer 180, and the drive motor 130 are fixedly coupled to each other by a screw 132, and the drive motor 130 rotates in one direction or in both directions by the rotation of the motor shaft 131. Anything that can be used can be used.

The lower housing 110 and the upper housing 120 is preferably made of a synthetic resin material such as a light weight and durable plastic, the close fixing portion 140, the switching bushing 150 and the inner bushing 160 It is preferable to use a ceramic material having high heat resistance and abrasion resistance, and the sealing ring 163 may preferably use a rubber material having a high elastic force to effectively block leakage.

The operation of the flow path switching valve 100 of the present invention configured as described above is as follows.

As shown in FIG. 5A, the communication hole 151 of the switching bushing 150 is in close contact fixing (140).

The fluid introduced through the one side inlet port 113 of the lower housing 110 is matched with the one side inlet guide hole 143 and the discharge guide hole 142 of the one side inlet guide hole 143 and the communication hole (151) If the motor shaft 131 of the drive motor 130 is operated in a clockwise direction by the electrical signal in the state that is discharged through the discharge guide hole 142 and the discharge port 112 of the lower housing 110, the As the switching bushing 150 coupled to be interlocked by the motor shaft 131 and the inner bushing 160 of the driving motor 130 rotates, the communication hole 151 has one side inlet guide hole 143 as shown in FIG. 5B. At the same time, the bottom periphery of the switching bushing 150 to close the one side inlet guide hole 143 of the close fixing bushing 140, passing through the one side inlet guide hole 143 and the discharge guide hole 142 The flow of the fluid becomes singular.

In addition, when the motor shaft 131 is rotated clockwise while the electrical signal is continuously applied to the driving motor 130 following the operation, the motor shaft 131 and the inner bushing 160 of the driving motor 130 are rotated. As the switching bushing 150 coupled to be interlocked to rotate, the communication hole 151 communicates the next inflow guide hole 144 and the discharge guide hole 142 of the close fixing portion 140 as shown in FIG. 5C. And the fluid introduced through the next inlet port 114 of the lower housing 110 passes through the next inlet guide hole 144 and the communication hole 151 and the discharge guide hole 142 to the outlet port of the lower housing 110. Discharged to 112, the flow of the flow path is switched.

Meanwhile, in the present invention, the number of inflow ports formed in the lower housing is described as three, but this does not limit the number of inflow ports, and in some cases, the number of inflow ports may be two or four or more.

In addition, the present invention has been described so that the flow of the fluid flows from the inlet port to the discharge port may be configured to flow in the direction from the discharge port to the inlet port in the reverse case.

As described above, the switching bushing coupled to be interlocked by the motor shaft and the inner bushing of the driving motor rotates, and the plurality of contact bushings formed in the close fixing part to communicate with the inlet port and the outlet port of the lower housing by the communication hole of the switching bushing. The flow path switching valve of the present invention is configured to selectively change the flow of fluid by selectively discharging water introduced into the plurality of inflow ports through the inflow guide hole and one discharge guide hole selectively. Since the bushing is coupled to the motor shaft of the drive motor in a straight line by the inner bushing and is arranged to rotate in the switching chamber of the upper housing, there is no fear of eccentricity in the switching bushing. There is a rising effect.

In addition, since the switching bushing and the close fixing bushing is formed of a ceramic having high heat resistance and wear resistance, it is not easily worn and there is an effect of preventing the fluid from leaking between the contact surface of the switching bushing and the fastening fixing bushing. .

Claims (2)

An installation groove 111 having an upper opening therein is formed in a circular shape, and a discharge port 112 is vertically penetrated so as to communicate with the outside at the center portion of the bottom surface of the installation groove 111. The lower periphery of the bottom surface 110 of the plurality of inlet port 113, 114, 115 is radially orthogonally spaced at a predetermined interval so as to communicate with the outside in a horizontal direction; The upper housing 120 is fixedly coupled to the upper surface and the coupling means 121 of the lower housing 110, and the upper housing 120 is formed in the vertical housing so that the rotary sealing hole 122 and the lower opening switching chamber 123 is stepped therein. and; A driving motor 130 fixedly coupled to an upper surface of the upper housing 120 and rotating the motor shaft 131 according to an electrical signal; A discharge guide hole fixedly coupled to the switching chamber 123 of the upper housing 120 and communicating with the inflow ports 113, 114, 115 and the discharge port 112 of the lower housing 110. 142 and an inlet guide hole 143, 144, 145 is formed in close contact fixing 140; It is rotatably coupled to the switching chamber 123 of the upper housing 120 to be in close contact with the upper surface of the close fixing portion 140, the discharge port 112 and one inlet port of the close fixing portion 140 on the bottom A communication hole 151 through which the 113, 114, and 115 are selectively communicated with each other, and a switching bushing 150 having a coupling hole 152 formed thereon; It is rotatably coupled to the rotary sealing hole 122 of the upper housing 120, the bottom is formed with a coupling protrusion 161 inserted into the coupling hole 152 of the conversion bushing 150, the upper surface of the drive motor An inner bushing 160 having a coupling groove 162 to which the motor shaft 131 of the 130 is coupled, and a ring groove 164 into which the sealing ring 163 is inserted; Flow path switching valve, characterized in that consisting of a silicon O-ring 170 is elastically embedded between the mounting recess 111 of the lower housing 110 and the bottom of the close fixing fixing 140 to prevent leakage. According to claim 1, It is coupled between the upper housing 120 and the drive motor 130 to reduce the driving force of the drive motor 130, the upper surface of the drive motor 130 A reduction unit 180 having an input unit 181 coupled to interlock with the motor shaft 131 of the upper side, and having an output unit 182 coupled to interlock the inner bushing 160 with the bottom surface; A sealing bracket fixed to the upper surface of the upper housing 120 while sealing the inner bushing 160 to prevent leakage between the rotary sealing hole 122 of the upper housing 120 and the coupling surface of the inner bushing 160. Flow passage switching valve characterized in that it comprises a (190).